Air purifier



FIG. 1 is a top perspective view of an air purifier of the present disclosure;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left-side elevational thereof;

FIG. 6 is a right-side elevational thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown in FIGS. 2 and 8 of the drawings represent portions of the air purifier and form no part of the claimed design. 

CLAIM The ornamental design for an air purifier, as shown and described. 